EP 2479180 A1 20120725 - Process for the preparation of alkylphosphates
Title (en)
Process for the preparation of alkylphosphates
Title (de)
Verfahren zur Herstellung von Alkylphosphaten
Title (fr)
Procédé pour la préparation des alkylphosphates
Publication
Application
Priority
EP 11151170 A 20110117
Abstract (en)
Preparing completely water-soluble tetraalkyl-bisphosphate, comprises (a) reacting a tetrachloro-bisphosphate with at least one alcohol, (b) when in step (a) at least 50% of the phosphate-chloride groups contained in the tetrachloro-bisphosphate are reacted, reacting the reaction mixture from step (a) with a base containing at least one substance, (c) then adding sufficient water to the reaction mixture from step (b) to form a mixture consisting of two separate liquid phases and (d) separating the tetraalkyl-bisphosphate containing phase from the mixture obtained in the step (c). Preparing completely water-soluble tetraalkyl-bisphosphates, comprises (a) reacting a tetrachloro-bisphosphate with at least one alcohol, (b) when in step (a) at least 50% of the phosphate-chloride groups contained in the tetrachloro-bisphosphate are reacted, reacting the reaction mixture from step (a) with a base containing at least one substance of formula (cation(n+)) a(X(m-)) b, (c) then adding sufficient water to the reaction mixture from step (b) to form a mixture consisting of two separate liquid phases and (d) separating the tetraalkyl-bisphosphate containing phase from the mixture obtained in the step (c). cation(n+) : a cation of charge n; X(m-) : an anion of charge m; and a, b : integers, which satisfy the relationship nx a is equal to mx b.
Abstract (de)
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Tetraalkylbisphosphaten durch Umsetzung von Tetrachlorbisphosphaten mit Alkoholen, Neutralisation des gebildeten Chlorwasserstoffs mit einer Base und Abtrennung des bei der Neutralisation gebildeten Salzes von der Reaktionsmischung als konzentrierte wässrige Lösung.
IPC 8 full level
CPC (source: EP KR US)
C07B 63/00 (2013.01 - KR); C07F 9/09 (2013.01 - KR); C07F 9/091 (2013.01 - EP US); C07F 9/14 (2013.01 - EP US)
Citation (applicant)
- US 2782128 A 19570219 - PAIST WALTER D, et al
- US 4056480 A 19771101 - HERBER JOHN F
- "Diphosphate Ester Plasticizers", INDUST. ENG. CHEM, vol. 42, 1950, pages 488
- INDUST. ENG. CHEM, vol. 42, 1950, pages S. 488
Citation (search report)
[XDI] DE 2625878 A1 19761223 - MONSANTO CO
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2476686 A1 20120718; EP 2476686 B1 20170802; BR 102012001156 A2 20130702; BR 102012001156 A8 20181226; BR 102012001156 B1 20190917; CA 2764166 A1 20120717; CN 102603792 A 20120725; CN 102603792 B 20160803; EP 2479180 A1 20120725; JP 2012149064 A 20120809; JP 6033548 B2 20161130; KR 101882518 B1 20180726; KR 20120083239 A 20120725; MX 2012000759 A 20121127; MX 345082 B 20170116; PL 2476686 T3 20171229; US 2012184764 A1 20120719
DOCDB simple family (application)
EP 12150718 A 20120111; BR 102012001156 A 20120117; CA 2764166 A 20120113; CN 201210012349 A 20120116; EP 11151170 A 20110117; JP 2012005987 A 20120116; KR 20120005161 A 20120117; MX 2012000759 A 20120116; PL 12150718 T 20120111; US 201213349858 A 20120113